DAB AQUATWIN TOP 132 Instructions Pour L'installation Et La Maintenance page 43

Connection on intake:
The AQUATWIN TOP system offers the possibility of managing one or two separate rain water collection tanks.
For the connection of a single collection tank, make the connection of the two separate intakes which must be taken individually to the tank.
Installation:
Place the AQUATWIN TOP in a well ventilated place, protected from unfavorable weather conditions, and with an environment temperature not
higher than 40°C, on an even surface; if this is not possible, use the adjustable vibration-damping feet (ref.1 Fig.1). After having positioned and
stabilized the AQUATWIN TOP, make the connection to the water mains with a 1" pipe connected to the interception valve provided (ref.1.fig.3).
Connect the intakes (ref.4. fig.3) to the pipes arriving from the rain water storage tanks, paying particular attention that they are inclined towards
the tank to avoid the formation of air pockets (avoid swan necks, the pipes must never pass over the pumps), avoid letting the pipes exert forces
on the intake mouths. Install the system as close as possible to the rain water collection tank, to ensure a good yield of the pump it must never
exceed a suction length of 20 meters and a height of 3 meters. If the suction length and height are greater, use another pump connected in series
to the system pump to overcome the system suction problem.
The suction point must always guarantee the intake of clean water; use a suction kit and valves with a filter to guarantee the supply and prevent
impurities blocking the valves or the internal parts of the pumps. The pipes, which can manage one or two independent tanks, must not have a
diameter smaller than the suction mouths (1"); although the system is provided with check valves, it is recommended to fit foot valves inside the
tanks. If the suction pipe is made of flexible material, always check that it is of the reinforced type to avoid shrinkage due to suction.
The connection of the secondary utilities (non drinking water) to the mains may be made on both sides of the delivery manifold with a 1½" flexible
pipe; it is not necessary to insert an expansion tank as the AQUATWIN TOP system already has an 8 liter tank.
Connect the overflow with a 2" pipe (ref.2 fig.3), this pipe must be directed towards a drain to avoid flooding in the event of malfunction or
overflowing of the system.
NEVER CONNECT A PIPE WITH A SECTION SMALLER THAN DN50 TO PREVENT SYSTEM MALFUNCTIONS
ANYTHING THAT IS EMPTIED INTO THE OVERFLOW MUST BE VISIBLE (PROVIDE A "FUNNEL-TYPE"CONNECTION)
Make sure that the discharge pipe has an incline that will guarantee the normal flow of possible discharges.
Connect the discharge to the sewerage system. If the incline of the discharge pipe is insufficient, install a lifting station in order to guarantee the
discharge.
Fig. 3
ENGLISH
The plumbing installation comprises the following connections
1. 1" connection from the mains (drinking water).
2. 2" connection for the overflow of the water storage tank.
3. 1½" connection for feeding the utilities circuit (may be fitted
on right or left of the system.
4. 1" connections for intakes from one or two rain water
tanks.
N.B. The two intakes are independent
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